[Bug 1185019] Review Request: gap-pkg-tomlib - GAP Table of Marks package

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https://bugzilla.redhat.com/show_bug.cgi?id=1185019



--- Comment #1 from Zbigniew Jędrzejewski-Szmek <zbyszek@xxxxxxxxx> ---
Package is nice and clean. But compression could be improved.

1. gzip --best is slow, and not very efficient. Would it be possible to switch
to xz?

$ ls -1s tms13.tom*
35516 tms13.tom
 8528 tms13.tom.gz    (this is with --best, 12s)
 8696 tms13.tom.gz    (this is with default settings, 4s)
 3976 tms13.tom.xz    (this is with default settings, 31s)
 5932 tms13.tom.xz    (this is with -3, 7s)

Switching to xz would give nice space savings. Using defaults for gzip or
slightly reduced compression for xz would give nice time savings.

2. Compression should be parallized. Maybe add a Makefile.gzip as Source1

%.gz: %
    gzip $<

and call make -f ${SOURCE1} $(for i in data/*.tom; echo $i.gz) _%{smp_flags}

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